The purpose of this study is to assess different hybrid natural orifice transluminal endoscopic surgery techniques in management of colorectal cancer as regard: feasibility of the technique, short term oncologic outcome and functional outcome.

Intervention will be done by conventional laparoscopy and transanal endoscopy (TEO or Gelpoint platform), patients are divided into two arms to compare different natural orifice techniques in resection of colorectal cancer.

Inclusion Criteria:

1. Medically fit patient.
2. Non metastatic pathologically proven sigmoid colon cancer.
3. Non metastatic pathologically proven rectal cancer.
4. Patient continent for stool.

Exclusion Criteria:

1. Patients with American Society of Anesthesiologist (ASA) score 4 and 5.
2. Patients with cardiac or chest problems that cannot withstand insufflation.
3. Unresectable tumors (defined as those who cannot be resected without a high likelihood of leaving microscopic or gross residual disease at the local site because of tumor adherence or fixation).
4. Obstructed or perforated cancer.
5. Patients with metastatic colorectal cancer.
6. Incontinent patients.